Typed DataSets - How To Reference Table
Dec 17, 2009I am creating a console application in Visual studio 2008-vb.net. I created a typed dataset-dataset1.xsd. Now in the code, I want to access the table. How can I reference the table?
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Cannot Reference A Dataset Table Using The Strongly Typed Name?
Apr 7, 2012I cannot figure out for the life of me why I cannot reference a dataset table using the strongly typed name. I created a "news" table in a dataset to write out and read in a simple xml.
If you look at the code below this does not work: 'Dim TableFail As ADataSet.NewsDataTable = ds.NewsDataTable 'Does not work
I can access the table by using an untyped name however: Dim NewsTable As ADataSet.NewsDataTable = ds.Tables("News") What is the proper way of accessing the datasets 'typed' datatables name.
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Use Transaction With Typed DataSets?
Apr 30, 2010I have a DB application that I've created using the Datasources wizard. A particular insert requires that two inserts must be done at the same time meaning that it has got to use transaction. how to use transaction in this situation.Only performance counts!
View 5 RepliesVS 2010 Typed Datasets Vs Entity Framework
Aug 19, 2011I just read this post url...Post #2 by jmc states indicates the use of Entity Framework instead of typed datasets.when jmc says something I usually pay attention. I have a large app that I've been converting from VB6 to .Net and I've used mainly typed datasets.It's a single user app that uses an Access database. I'm have no problems retrieving the data from a table or multiple tables and I'm very happy with its preformance.Is it worth scapping what I've done and learn how to use Entity Framework? I should add that I'm near the end of my programming career not the beginning.
View 4 RepliesPutting Forward A Solution To Replace Typed Datasets?
Sep 12, 2010A project I am currently employed with will have some time soon to improve and specialise a product that is currently in use. We may have about 4 man weeks spare in which we could replace the typed datasets that are in use.
The project is currently written in Vb.Net and we will definitely not have time to replace this code with C#.Net, although we would like to.
My question is what would you suggest as a replacement for the typed datasets.
I have currently suggested nHibernate as I have worked with Hibernate before and loved it.
Linq to SQL has been discounted.
Using Typed Datasets' Connection String For Client Application?
Jan 20, 2012I have set the connection string of my dataset(typed) asData Source=MyHomeServerSQLEXPRESS;Initial Catalog=dbTestSharing;Integrated Security=TrueThis is going to be a client side application. I need to change the machinename in the connection string so it could connect with server.
View 1 RepliesBuild Data Layer Strongly Typed DataSets Or Classes?
Jun 22, 2012I used to build data layer by using Classes, however someone suggest to use Strongly Typed DataSets because it's faster in development. The data layer that I'm going to build should support multi DBMS(Oracle,MSSQL, MySQL..)
View 3 RepliesC# - Build Data Layer Strongly Typed DataSets Or Classes?
Aug 17, 2009I used to build data layer by using Classes, however someone suggest to use Strongly Typed DataSets because it's faster in development. The data layer that I'm going to build should support multi DBMS(Oracle,MSSQL, MySQL..).
how is better build it by using Strongly Typed DataSets or by using Classes?
VS 2010 Typed Datasets Are Created At Design Time Only And Not Dynamically
Jan 20, 2012In a typical session with the program I'm writing, the user needs to be able to access the data in 1 to 500 (maybe) tables (but always only one table at a time). Up to now I've been creating these single table datasets dynamically, as and when required.I've now come across the distinction between typed and untyped datasets (where typed seems to be the recommended option). It seems, though, that typed datasets are created at design time only and not dynamically. Is this correct? Are all of my dynamically created datasets therefore untyped?
View 12 RepliesUsing VB 2008 & Access 2007 For Windows Forms Application Having Typed Datasets?
Nov 20, 2010I am using VB 2008 & Access 2007 for windows forms application having typed datasets while creating connection to DB vb asks to store connection string so i did it now that i want to know where is the actual path of file where these connection strings are stored. b'cas after runnig a macro in Access Database i lost all these connections from Data Source Configuration Wizard Combo Box & also i am anable to create a new connection to Databases.I have tried to reinstall the entire Visual Studio couple of times .
View 17 RepliesDimming New Datasets For Each Table?
Oct 14, 2011I'm using the MYSQL .NET connector with an adapter to fill a dataset from a SELECT statement. Between different SELECT statements I use the DataSet.Clear() function. The Getxml shows me that the dataset is empty, however when cycling through the Table's columns, I have all the columns from all the tables used in prior SELECT statements.
How do I go about that without Dimming new Datasets for each table?
Typed Dataset Binding Fields Of Related Table?
Feb 9, 2010I have a typed dataset with 2 tables and a relation between the 2 tables. The relation is a 1 to 1 relation.First, who cane help me how to bind both the fields of the parent and the child table to a textbox.And second, in the dataset designer you cane preview the data. There a see for each record 1 row with all fields of the parent and also the fields of the child table. How cane i have the same result in a datagridview?
View 1 RepliesFilling Unbound ComboBox From Data Table In Typed Dataset
May 31, 2010I am designing a form to Enter new City Name list where i accept following fields
CityName, District, State, Country, Pin.
because a State names and Country names can be retrived from earlier entries, i want to allow user to select desired name from a list in combo box or a list in Auto Complete Custom Source for text box, to do this i have added a Table Adapter to underlying DataSet having Query "SELECT DISTICT STATE FROM CITY ORDER BY STATE".
Now, how do i use this Table Adapter to fill the ComboBox List without binding
And also Custom Source List for TextBox.
Master Detail Gridview Using Table Adapter (typed Dataset)?
Jun 9, 2009i created a type dataset. added two table adapters and made relationship on the key. now i want to show the datagridview with master/detail. how i can do it?
View 5 RepliesAdded Table To Database But Can't Reference Table Adapter In Code?
Feb 26, 2011I added a table to my Access database. I added that table to my dataset. Using Database Designer VB Studio, my table and tableadapter show up in the design view. The class definition is in the datasetdesigner.vb, and it shows in the object browser. But, I can't reference it in code. I am a newby and obviously missing somethning.
View 1 RepliesComboBox Value Selection - Using Specified Table As Reference?
Feb 6, 2012I have a vb application sitting on an sql server with 4 different tables. I want a scenario where when I select any table from the combobox, every query I will run should use that table as a reference.
E.g. ComboBox values(tables)=A,B,C,D
If A is selected then
SQLQuery="Select * from A "
If B is selected then
SQLQuery="Select * from B " etc
Add Table To Word, Error: Not A By Reference Property?
Nov 23, 2009This is a portion of code. It creates a table of 6 rows with 3 columns on the word document. But I keep getting an error "Range is not a by reference property." However, the table is being added to the word document. I researched the error here & other sites, but not sure how to fix this. VB.Net is still pretty new to me.
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Generate Reference Number From Database Table?
Mar 16, 2011I am a beginner in ASP.NET using VB Code. I want to generate a Unique reference no by concortinating three column fields.[code]...
View 1 RepliesVS 2010 Data Table And Cross Reference?
Jun 22, 2012I Have a c++ program that is already completed but has no ineterface. So What I am trying to do is translate the c++ code over to Visual Basic, which is trickier than I thought. I need to browse for a text file, cross reference that with a csv file which will match IDs and replace in the text file, outputting to a textbox to save
View 18 RepliesLINQ To SQL: Reference The Data Context When Extending A Table Object?
Jul 27, 2009If I'm extending OnCreated for a LINQ to SQL table object, is it possible to get a reference to the data context to which the table belongs? For example, if I add a property to the data context:
Partial Class MyDataContext
Private _myValue As String
Public ReadOnly Property MyValue As String
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I don't want the property on the data context to be Shared, because it could be different per instance. I've been pouring over the designer code to figure out where the reference might be, but no luck yet.
Change Typed Dataset To Shared Typed Dataset?
Aug 9, 2009I create one typed dataset by dataset designer in VS2008. How can I change this dataset to shared typed dataset?
View 6 RepliesReplace The "1" Sting Text With A Reference To A Temporary 1-row Table?
Jul 27, 2009This is my first time working with VB, though I've been working with VBA for a couple years now to automate office routines at my work. At my last job, I saved about 3 hours a day with my automations, and at my current job, I'm shooting for about the same. The problem is, though I have a high affinity for computers and technology, I never studied to be a programmer, and so I really can only tweak code I find online, and then eventually build up enough of my own subroutines to accomplish the tasks at hand. This is why I'm posting here on this forum, I've reached my wits end for what I imagine is a relatively simple problem. This was initially written in VB 6, but I imported and converted it with Visual Studio 2008, and it runs fine. This demo code is set to populate a PDFwith some sample string text. What I want to do is to replace the string text with a reference to data in either an Access or SQL database - I prefer Access, but either will work. Here is a sample of the demo code I'm working with:
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On this last line, I want to replace the "1" sting text with a reference to a temporary 1-row table I'll be generating from an Access Query, with Field Names to match the Form Field names of the PDF, So I've setup an Access DB with the following configuration (in reference to the path, I'm using Vista x64):
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I have also imported this table as a dataset (my understanding is that the import into Visual Studio 2008 makes it a typed dataset?) so either referencing the access DB directly or the imported Dataset should work. I can also setup the Access DB as a SQL DB instead if it would make it easier. Now, if I was programming in VBA, I might do something like this:
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Cross Reference The Source Data Value E.g. 1 To Display The Text "Not Hispanic" From The Cspopup Table?
Jan 22, 2009I have several combo boxes that have a single Dataset and separate Table Adapter and Binding Sources to fill them.One combo box I have lists the Hispanic Origin of the client.The Data Source is bsCSpopup_HispOrg, the Table adapter name is taCSpopup_HispOrg.Below is the Table Adapter query if you can call it that and selects only the codes I want to fill the combo box
SELECT fcpopkey, fcpoptext, fcpopval
FROM cspopup
WHERE (fcpopkey = 'hispanic.origin')
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I am doing just fine loading the dispay text when the form loads, and saving the data to the client table, but, when I load the clients values, how do I cross reference the Source data value e.g. 1 to display the text "Not Hispanic" from the cspopup table.
How To Use DataSets
Jul 30, 2009I'm trying to work with an ODBC driver for Interbase in VS2008 (vb). I succesfully inserted the data tables I want to use in the project datasource. Then I want to add some rows in one of the tables of the datasource. I used myDataSet.addTABLENAMErow(field1, field2, ...).The compiler gives me no error, but when I open the database with InterbaseConsole, the line I've add is not there. Do I do something wrong? Must I open/save the database (how do I do so). I've tried meDataSet.AcceptChanges whitout result.I'm not used to work with Datasets and tables...
View 1 RepliesDebugging And DataSets?
Jan 29, 2010Anyway to view the content of a dataset or datatable in debug? I don't mean looking up a specific element of the dataset but to view the hole thing.
View 4 RepliesDifference Between Two Datasets?
Mar 14, 2009difference between the two statements given below
1. Dim ds as new DataSet
2.Dim ds as DataSet = New DataSet
How To Combine Two DataSets
Oct 8, 2010I'm trying to combine two datasets, each with 1 datatable and each having the same schemas. Datatable 1 would have a list of records. Datatable two may, or may no, have some or all of the records from table 1 plus more records. I would like to remove all the records from table 2 that are present in table 1.
This is what I got so far:
For Each table1 As DataTable In ds.Tables
For Each row1 As DataRow In ds.Tables(0).Rows
ds.Tables(0).PrimaryKey = New DataColumn() {ds.Tables(0).Columns(0)} 'Where 0 is the index of the column that's your key
row2 = ds2.Tables(0).Rows.Find(row1("ID"))
'if its found, delete it
Next
Next
How To Join Two Datasets Together
Aug 2, 2011how to join two datasets together.
First Dataset
Dim sql As String
sql = "SELECT payment.Debtor, SUM(Value_invoice) AS before_this_month,debtor.nama FROM Payment INNER JOIN dbo.debtor ON Payment.Debtor = debtor.debtor" & _
[code]....
Now i just want to either inner join or left join PaymentBeforeThisMonth and PaymentThisMonth into another dataset?
How To Loop With Datasets
Feb 10, 2011I have a dataset that contains only employee ID's. I need to loop through that dataset and for each employee ID I need to loop through several other datasets and pull data. I need help with this looping syntax. Here is a sample of some code that I am receiving an error with:
Dim EMPID as Integer
Dim CommandEmpid As New OleDb.OleDbCommand
Dim EmpidDS As New DataSet
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How To Save Datasets
Mar 2, 2011I have a form that needs to load data for 20 different combo boxes - the data is always the same. To get the combo boxes to function properly i need to create a separate dataset for each combo box. Doing this when the form loads takes it about 7 seconds each time a search result is double clicked and the form pops up displaying the correct data. The form is bound to the main table. Is there a way to store these data sets in memory somewhere so the user can close the form but still have them loaded? I can put this code behind the login form and it works until the form is closed, then the combo's no longer load.[code]
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